Engine-governor



v2 Sheets--Sheet .1.

(No Modl.)

C, M, GIDDI'NGS.' ENGINE GOVERNOR.

Patented May 10,1898.

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2 Sheets-Sheet 2. C. M. GIDDINGS -BNGINE GOVERNOR.

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Unirse STATES PATENT Dreier..

CHARLES M. GIDDINGS, OF ROCKFORD, ILLINOIS.

ENGINE-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 603,829, dated May 10,1898.

I l Application filed January 18,1897. Serial No. 619,561- (No model.)

T0 @all whom, it may concern.'

Be it known that I, CHARLES M. GIDDINGs, a citizen of the UnitedStates,residin g at Rockford, in the county of Winnebago and State ofIllinois, have invented certain new and useful Improvements inEngine-Governors; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification.

My invention relates to improvements in shaft-governors for engines, andit consists, primarily, in so constructing the governor that it isadapted to be manufactured as a commercial commodity adapted to beplaced on any ordinary steam-engine.

Another feature of this invention is that of constructing the governorin a self-con tained case or housing the cover of which forms a materialand substantial element of the govv ernor, whereby I am enabled tolocate the valve-rod eccentric and the governing-eccentric closelyadjacent to each other, so as to bring the operative parts of theeccentric nearly in line with each other.

The other features of this invention will readily be understood from thefollowin g description, together with the accompanying drawings,illustrating the invention, in which- Figure l is a view in elevation ofmy improved governor with the cover and eccentric mechanism thereofremoved. Fig. 2 is a sectional view of the same on the line .fr in Fig.l, looking in the direction of the arrow. Fig. 3 is a view in elevationof the inside of the cover, showing the eccentric guide mechanismthereon. Fig. 4 is a transverse section of the same on the line y y inFig. 3, looking in the direction of the arrow. Fig. 5 is a View inelevation of the outside of the governor, showing the cover andvalve-rod eccentric and guide mechanism mounted thereon. with the weightand spring mechanism left out on the line e' z in Fig. 5, looking in thedirection of the arrow. Fig. 7 shows a perspective View of thegoverningeccentric and Fig. 6 is a sectional view of the governor thesleeve to which it is secured and also the separable eccentric-strapoperating on said eccentric. Fig. S shows a sectional view of a systemof bushings adapting the governor mechanism to be fitted todifferent-sized shafts.

In the drawings, A represents a disk provided with a hub B, adapted to1it and be secured to an engine-shaft, and with an annular :rim A",adapted to form the periphery of an inclosed case.

A2 is a disk adapted to t against the edge of the annular rim A andforms the removable cover of an inclosed case, within which I place theparts constituting the actuating mechanism of the governor.

To the inside of the disk A are secured studs C C', which extend throughholes in the cover A2 and are provided with nuts on the outside of thecover A2, so as to secure it firmly in place.V These studs C C areadapted to be placed in other openings c c in the disk A, as and for thepurpose hereinafter set forth. On these studs C O are pivoted the arms DD of weights D2 D3, which weights are operated by centrifugal force inone direction and by spring mechanism in the other direction to actuatethe eccentric mechanism hereinafter described.

To the outer end of the weight D3 is adjustably secured an arm d, theouter end of which is adapted to pass through a slot in the weight D2and its arm D, as shown in dotted lines in Fig. 1, as the weights D2 andD3 move toward each other, and to the outer end of the arm d is secureda flexible wire rope or chain E, which passes around the periphery ofthe hub B of the disk A and is secured in the outer end of the WeightD2, in a groove therein, as shown in dotted lines in Fig. 1. By means ofthis flexible connection E the weights D2 and D2are moved in unison witheach other. On the rope or chain E, I secure a lugor projection e,adapted to enter a slot f or f', as desired, in the sleeve F, upon whichthe governing-eccentric G, hereinafter described, is secured, (see Fig.7,) so that the movement of the weights D2 and D2 in and out operates torotate the sleeve F and eccentric G thereon around the shaft, ashereinafter described. The arm d being adjustable in the end of the IOOweight D3, any slack in the flexible rope or chain E can be adjusted andtaken up, as desired. In the weight D2 there is a set-SorenT d', whichpasses through a screw-threaded opening d2 (shown in dotted lines) inthe weight. This screw is adapted to be adjusted in and out by means ofa screw-driver inserted through an opening d3 in the rim A' and isadapted to contact with the hub B to limit the inward travel of theweights and thereby adjust the travel of the eccentric mechanismactuated thereby. For moving the Weights toward each other I secure oneend of a spiral spring H to the lug d on the inside of the annular rimA', and to the other end of said spring I secure a flexible connectionh, which passes through a slot (shown in dotted lines) in the arm D' ofthe weight D3 and is attached to an adjustable sector-block H', adaptedto be adjusted in and out on the arm D' by means of set-screws h' andh2, so as to vary the tension of the spring I-I, and operates as aspeedregulator for the governor, this result being accomplished byturning the set-screw h2 in or out, as desired, by inserting ascrew-driver through an opening a2 (shown in dotted lines) through therim A', thereby varyin g the length of the short lever-arm, while theleverage of the spring H upon the weight-armD' may be uniformly variedand gradually increased or decreased by turning the vset-screw h' in orout, as desired.

In Fig. 7 I show the sleeve F, which slips down over a bushing B',preferably made of brass, which extends from the end of the hub Bthrough the sleeve F and eccentric G The end of the sleeve F alsoextends over the inner end of the hub B to a shoulder b' thereon, one ofthe slots f therein receiving the projection e on the flexible rope orchain E, so that the same thereby connects the flexible rope or chain Ewith the sleeve F and communicates the movement of the weights D2 and D3thereto, so as to rotate the sleeve F and the eccentric G, securedthereto, around the engine-shaft B2. Around the eccentric G, I place aseparable eccentric-strap consisting of two parts I I', which fit in a Vgroove around the periphery of the eccentric G,Which .groove is adaptedto be adj usted to take up the wear thereon. On the halves I and I' ofthis eccentric-strap are flat faces t' and t', parallel to each other,as and for the purpose hereinafter set forth.

In the cover'A2, I make a rectangular opening provided at its sides withparallel guides J J preferably central in the cover A2. These guides Ipreferably make of rods babbitted into place, so that all difficultmachine-work thereon is avoided, and upon these guides J J' is mounted arectangular plate or frame K, having a central opening K' therein topermit it to move across the engine-shaft on the guides J J The parts 7olo' on the inside face of this plate or frame K, which form portions ofthe slides thereon operating on the guides J J', are/made so that theycan be adjusted to and from the guides J J', so as to take up any wearthereon. On the inside face of the plate or frame K, at rightangles tothe slides 7c k thereon, are projections L L', which are adapted toengage the faces t' t" of the separable strap I I' on thegoverning-eccentric G, so that the rotation of the governing-eccentric Goperates to move the plate or frame K on the guides J J directly acrossthe shaft B2. Upon the face of the plate or frame K, I adjust aVvalve-rod eccentric M and then secure the same thereon by means ofscrews m, by means of which feature I am enabled to so locate theeccentric upon the face of the plate or frame K as to adapt the governorto the varying travel and lap of the valves of different makes ofengines, as I am enabled thereby to increase or diminish the throw ofthe eccentric, as may be equired, the eccentric being carried across theshaft B2 by the movementl of the plate or frame K on the guides J J inthe cover A2, which plate or frame K is in turn actuated by thegoverningeccentric G through the eccentric-strap I I', this eccentric Gbeing rotated by the movement of the weights D2and D2, communicatedthereto through the flexible rope or chain E and the lug e thereon.

It will be observed that in this construction the removable cover A2 ofthe inclosed case forms a support for the valve-rod-eccentric mechanismand in this regard becomes a material part of the structure, and itenables me to bring the valve-rod eccentric nearly into line with thegoverning-eccentric mechanism, and thereby contributes very materiallyto the stability of the structure.

In the description heretofore I have not referred to the fact that theparts ot' this structure are adapted to be reversed, so that thegovernor can be at will arranged to run in the opposite direction. Inthe disk A are a set of holes c c', adapted to receive theweightbearings C C', and on the rim A' there is a boss d', adapted toreceive the end of the spring H when reversed, and in the end of theeccentric-sleeve F there is an extra slot f', adapted to engage the luge on the rope or chain E. Now in case it is desired to reverse theaction of the governor the studs C C' are placed in the holesc c'. TheWeight-arm D is then mounted on the stud in the hole c and theweight-arm D' on the stud in the hole c' and the end of the spring I-Isecured to the boss a'. The sleeve AF is then put in place with the slotf' on the lug e. The parts then being bolted together and adjusted, thegovernor is adapted to run in the opposite direction from vthat rsthereinbefore described.

It will also be observed that the construction of my improved governorhereinbefore described enables me to readily adjust it to operate valvesof varied lap and travel, so that I can utilize it upon an enginealready constructed by simply adjusting the parts of IOO IIO

the mechanism to accord with the travel and lap of the valve of theengine upon which it is placed.

In Fig. 8 I show a system of bushings adapted to be placed in the hub B,so as to fit the hub of any particular-sized shaft.v In this case I usea long bushing N, extending through the hub B, and brass bushing B andthen make a groove therein to take in the key O, which fits in groovesin the hub and shaft in the usual manner, and in Figs. 6 and 8 I show alug P, through which a set-screw P passes down upon the end of the keyO, so that it is firmly held in place.

In the foregoing description of my invention I have described astructure embodying my invention as shown in the drawings. It isobvious, however, that many parts thereof may be varied withoutdeparting from the spirit of the invention. Therefore I do not desire tolimit myself to the exact construction shown and described; but

Vhat I claim, and desire to secure by Letters Patent of the UnitedStates, is-

l.V The combination in an engine-governor, of a governing-eccentric,concentric with the shaft upon which the governor is mounted,Weight-and-spring mechanism communicating with and rotatingsaidgoverning-eccentric, a fixed disk or plate adjacent to and insubstantially the same plane with the governing-eccentric, and avalve-rod eccentric mounted on guides supported by said disk or plateand actuated by said governing-eccentric, substantially as and for thepurpose set forth.

2. The combination in an engine-governor, of a disk or plate adapted tobe secured to an engine-shaft and adapted to form one side of aninclosed case, weights mounted on studs on said disk adapted to be movedoutward by centrifugal force and inward by a spring or springs, meansconnecting said weights so that they will move in and out in unison, agoverning-eccentric adapted to be rotated around the shaft by themovement of said weights, a plate or cover adapted to be secured to saidfirst-named plate or disk in substantially the same plane as thegoverningeccentric and forming the other side of an inclosed case,guides in said plate or cover,v

a valve-rod eccentric supported by and operating on said guides, andmeans connecting said governing-eccentric with said valve-rod eccentric,and moving it back and forth across the shaft according to the movementof said governing-eccentric, substantially as and for the purpose setforth.

3. The combination in an engine-governor, of a disk or plate adapted tobe secured to an engine-shaft, so as to form one side of an inclosedcase, an annular rim thereon forming the periphery of such inclosedcase, a plate or disk A2 adapted to be secured to said firstnamed plateor disk and the rim thereof so as to form the otherside of Ysuchinclosedcase, a governing-eccentric in substantially the plane of the plate vordisk A2, centrifugal weights, springs within said inclosed case foractuating said governing-eccentric, guides on said disk or plate A2, aplate or frame operating on said guides, a valve-rod eccentric mountedon said plate or frame, and a separable eccentric-strap on saidgoverning-eccentric having fiat faces on opposite sides of its peripherywhich contact with the valverod-eccentric plate or frame, substantiallyas and for the purpose set forth.

4. The combination in an engine-governor, of a governing-eccentric,governing mechanism actuating said eccentric, a reciprocating plate orframe traveling on guides substantially in the same plane with thegoverningeccentric and actuated by said eccentric-governing mechanism,and a valve-rod eccentric adapted to be adjusted on said reciprocatingplate or frame, and secured thereto so as to adapt the governor to thevarying travel and lap of the valves of different makes of engines,substantially as and for the purpose set forth.

5. In an engine-governor, a governing-eccentric, a disk or plate havinga rectangular opening therein, on substantially the same plane with thegoverning-eccentric, guiderods babbitted in the sides of said opening, asliding plate or frame reciprocating on said guide-rods, and means foradjusting said plate or frame to said guide-rods so as to take up wear,substantially as and for the purpose set forth.

6. In an engine-governor, a disk or plate A2 having a rectangularopening therein, a sliding plate or frame reciprocating in said openingand supporting a valve-rod eccentric, a governing-eccentric lconnectedwith and operating the plate carrying the valverod eccentric, andmounted in substantially the same plane with the disk or plate A2,centrifugally operating governing weights, a flexible connection betweensaid weights and said governing-eccentric, substantially as and for thepurpose set forth.

7. The combination in an engine-governor, of centrif ugallyoperatingWeights, an adj ustable arm d on one of said Weights, and a ilexibleconnection E between said arm and the outer end of the other weight,substantially as and for the purpose set forth.

S. The combination in an engine-governor, of a centrifugally-actuatedweight, a spring for moving said weight inward, asector-block adapted tobe moved inward and outward on the weight-arm consisting of twosections, one of which is adjustable upon the other, and a flexibleconnection between said spring and the adjustable section of saidsector-block, substantially as and for the purpose set forth.

9. The combination in an engine-governor, of a centrifugally-actuatedweight, a spring IOO formoving said weightnward, aseetor-block, meansfor adjusting said quadrant-clip, subone section of which is adapted tobe moved stantially as and for the purpose set forth. 1o back and forthon the weight-arm for adjust- In testimony whereof I affix my signatureing the speed of the governing mechanism, a in' presence of twowitnesses.

flexible connection between said spring and CHARLES M. GIDDINGS.

said sector-block, an adjustable quadrant-clip operating against theieXible connection between the spring and sectorblock, and a Witnesses:

FRED EINFELDT, H. J. CURTZE.

